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Mobitz Type II Second-Degree Atrioventricular Block with Narrow QRS and Junctional Extrasystoles: What is the Mechanism?
MedLine Citation:
PMID:  24237845     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A 74-year-old man underwent an electrophysiological study due to Mobitz type II second-degree AV block with narrow QRS and frequent junctional extrasystoles. During the study, there were very frequent single His bundle depolarizations with multiple coupling intervals that reproduces the ECG findings. In this case, some His bundle extrasystoles result in retrograde concealed conduction and prolonged local refractoriness in the AV node that manifest as block of the next atrial impulse. This form of presentation is known as Pseudo AV block. This article is protected by copyright. All rights reserved.
Authors:
Javier Jiménez-Díaz; Juan J González-Ferrer; Giovanna Uribe Heredia; Javier Moreno Planas
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-11-14
Journal Detail:
Title:  Journal of cardiovascular electrophysiology     Volume:  -     ISSN:  1540-8167     ISO Abbreviation:  J. Cardiovasc. Electrophysiol.     Publication Date:  2013 Nov 
Date Detail:
Created Date:  2013-11-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9010756     Medline TA:  J Cardiovasc Electrophysiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
This article is protected by copyright. All rights reserved.
Affiliation:
Unidad de Arritmias, Servicio de Cardiología, Hospital General Universitario de Ciudad Real, Ciudad Real, Spain.
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